What is the point of Wax Lip Candy?

Another question made me start thinking about this. I’ve never understood what they’re for, from my understanding they are not toxic, but you shouldn’t eat them because they’re made of wax. If you shouldn’t eat them and they’re basically just a shape, what are they for? Who buys them? More importantly, why?

In case you don’t know what they are, the answer is little abominations